Question

A ball thrown by a boy is caught by another after 2 sec. some distance away in the same level. If the angle of projection is 30o, the velocity of projection is [JIPMER 1999]
A) 19.6 m/s B) 9.8 m/s C) 14.7 m/s D) None of these

Answer 1

19.6 because if the angle of projection is 30 degree it will be diuble yhe gravitational pull

Answer 2

T=2usintheta/g

U=T×g/2sintheta

U=2×9.8/2×sin30

Hence,U=19.6m/s